Cleanup of .gitignore.
Cleanup of .gitignore.

pveentjer/hazelcast-simulator,Danny-Hazelcast/hazelcast-stabilizer,pveentjer/hazelcast-simulator,Donnerbart/hazelcast-simulator,Donnerbart/hazelcast-simulator,jerrinot/hazelcast-stabilizer,jerrinot/hazelcast-stabilizer,hasancelik/hazelcast-stabilizer,hasancelik/hazelcast-stabilizer,hazelcast/hazelcast-simulator,hazelcast/hazelcast-simulator,hazelcast/hazelcast-simulator,Danny-Hazelcast/hazelcast-stabilizer